这显然会改进性能，因为不需要通过系统调用请求更多内存。

This obviously improves performance, because you don't need to go through system calls to request additional memory.

youdao

好像不存在收集参数信息(比如内存堆的使用)的直接的系统调用。

Direct system calls to gather information about parameters (like memory heap usage) don't seem to exist.

youdao

内存和用户数量对系统调用的影响

System Calls by Memory and Number of Users chart

youdao